Method ToUtf8

headers/openvr_api.cs:2194–2208

(string managedString)

public class Utils
{
	public static IntPtr ToUtf8(string managedString)
	{
		if (managedString == null)
		{
			return IntPtr.Zero;
		}

		int size = System.Text.Encoding.UTF8.GetByteCount(managedString) + 1;
		if (buffer.Length < size) buffer = new byte[size];
		int written = System.Text.Encoding.UTF8.GetBytes(managedString, 0, managedString.Length, buffer, 0);
		buffer[written] = 0x00; // null terminate
		IntPtr nativeUtf8 = Marshal.AllocHGlobal(written+1);
		Marshal.Copy(buffer, 0, nativeUtf8, written+1);
		return nativeUtf8;
	}
	private static byte[] buffer = new byte[1024];
}